science

Question 1

one of the major pecies of eaths rocky outer layers on which continetns ans oceans move

Answer 1

plates

Question 1

theory that states that earths plates move slowly indifferent directions

Answer 1

theory of plate tectonics

Question 2

the very slow motion of the continents

Answer 2

continental drift

Question 3

a record of geologic events and life forms in earths history

Answer 3

geologic time scale

Question 4

one of the three long units of geological time between the precambind and the present

Answer 4

era

Question 5

one f the units of geological time into which geologists divided eras

Answer 5

period

Question 6

an animal that does not have a backbone

Answer 6

invertebrate

Question 7

small bones that make up a backbone

Answer 7

vertebrate

Question 8

an animal that spends its life in water and adult life on land

Answer 8

amphibian

Question 9

an animal that lays eggs and has lungs and scaley skin

Answer 9

reptile

Question 10

when many animals go extinct

Answer 10

mass extinction